libra.linkem.com has no CNAME records.
Question and response
Question
dig libra.linkem.com. NS
Answer
The response has no answer records.
Authority
linkem.com. 10800 SOA barakus.tiscali.com. nsadmin.it.tiscali.com. 2025092500 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0